michaeldegli

Big-O Time Complexities for Elixir data structures

Map [1]

Operation	Time Complexity
Access	O(log n)
Search	O(log n)
Insertion	O(n) for < 32 elements, O(log n) for >= 32 elements [2]
Deletion	O(n) for < 32 elements, O(log n) for >= 32 elements

michaeldegli

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

michaeldegli

" VIM Configuration - Vincent Jousse
" Cancel the compatibility with Vi. Essential if you want
" to enjoy the features of Vim
set nocompatible

" Activate pathogen
call pathogen#infect()

" -- Display
set title                 " Update the title of your window or your terminal

michaeldegli

defmodule ChangeMaker do
  @denominations [
    10000,
    5000,
    2000,
    1000,
    500,
    200,
    100,
    25,

michaeldegli

import asyncio
import vobject
import os
import json

import_dir = os.path.dirname(__file__)
rel_path = "contacts.vcf"
abs_file_path = os.path.join(import_dir, rel_path)

f = open(abs_file_path)

michaeldegli

FROM ubuntu:14.04

RUN apt-get update && apt-get install -y curl git locales

RUN locale-gen en_US.UTF-8
ENV LANG=en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

RUN apt-get -y update && \

michaeldegli

Elixir Supervision Trees Made Easy

I started with Elixir just a couple weeks after the switch from 1.4 to 1.5, so the bulk of online resources were out of date (or at least resulted in deprecation warnings). This guide is for defining Elixir 1.5 supervised modules.

It's not actually terribly complicated. It's just sometimes unclear from examples what's implemented by the language and what you actually have to implement yourself.

Say we want a supervision tree like this (where each atom is a process):

    :a

/ \

michaeldegli

" This vimrc is "inspired" by @moonglum, @garybernhardt and @railsbros-dirk
" Thanks to all of you for letting me steal your stuff :)

" Activate Syntax Highlight
set hlsearch
" Incremental search, search as you type
set incsearch
" Ignore case when searching
set ignorecase smartcase
" Ignore case when searching lowercase

michaeldegli

// MySQL to Google Spreadsheet By Pradeep Bheron
// Support and contact at pradeepbheron.com

function myMySQLFetchData() { 
  
  var conn = Jdbc.getConnection('jdbc:mysql://127.0.0.1:3306/employee_db', 'username', 'pass'); // Change it as per your database credentials

  var stmt = conn.createStatement();
  var start = new Date(); // Get script starting time
  

michaeldegli

// https://jsbin.com/wakubofuvo/edit?js,console
var arr = [2012, 2011, 2010, 2008, 2002];
var tmp = [];

_.forEach(arr, function (e, i) {
  if(e - arr[i + 1] > 1) {
    var range = e - (arr[i + 1] + 1); //in between
    while(range > 0) {
      tmp.push({year: +(e - range)});
      --range;